131697941 has 4 divisors (see below), whose sum is σ = 131726892. Its totient is φ = 131668992.

The previous prime is 131697893. The next prime is 131697983. The reversal of 131697941 is 149796131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 149796131 = 317 ⋅472543.

It can be written as a sum of positive squares in 2 ways, for example, as 55502500 + 76195441 = 7450^2 + 8729^2 .

It is a cyclic number.

It is not a de Polignac number, because 131697941 - 2⁶ = 131697877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131690941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5996 + ... + 17301.

It is an arithmetic number, because the mean of its divisors is an integer number (32931723).

Almost surely, 2^131697941 is an apocalyptic number.

It is an amenable number.

131697941 is a deficient number, since it is larger than the sum of its proper divisors (28951).

131697941 is an equidigital number, since it uses as much as digits as its factorization.

131697941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28950.

The product of its digits is 40824, while the sum is 41.

The square root of 131697941 is about 11475.9723335324. The cubic root of 131697941 is about 508.7756623880.

The spelling of 131697941 in words is "one hundred thirty-one million, six hundred ninety-seven thousand, nine hundred forty-one".